图片通过javaCV转RTMP流

最新推荐文章于 2024-07-14 03:05:11 发布

原创最新推荐文章于 2024-07-14 03:05:11 发布 · 2.7k 阅读

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本文介绍如何使用JavaCV将图片转换为RTMP流并进行实时推送。具体包括配置RTMP连接、设置音视频参数、读取图片、创建帧并进行流媒体传输等关键步骤。

图片通过javaCV转RTMP流

public static void main(String[] args) {
// captureScreen();
    try {
        transferPicToRtmp("rtmp://yourIp:1935/live/test.stream");
    } catch (Exception e) {
        e.printStackTrace();
    }
}
/**
* 
* 图片转RTMP流
 * 
 * @param outRtmpUrl
 * @throws Exception
 * @throws org.bytedeco.javacv.FrameRecorder.Exception
 * @throws InterruptedException
 */
public static void transferPicToRtmp(String outRtmpUrl)
        throws Exception, org.bytedeco.javacv.FrameRecorder.Exception, InterruptedException {

    int frameRate = 25;
    FrameRecorder recorder;
    try {
        recorder = FrameRecorder.createDefault(outRtmpUrl, 352, 288);
    } catch (org.bytedeco.javacv.FrameRecorder.Exception e) {
        log.error(e.toString());
        throw e;
    }

    recorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);
    recorder.setFormat("flv");
    recorder.setFrameRate(frameRate);
    recorder.setGopSize(frameRate);

    /*************************************************************
     * 设置音频
     ************************************************************/
    // 不可变(固定)音频比特率
    recorder.setAudioOption("crf", "0");
    // 最高质量
    recorder.setAudioQuality(0);
    // 音频比特率
    recorder.setAudioBitrate(192000);
    // 音频采样率
    recorder.setSampleRate(44100);
    // 双通道(立体声)
    recorder.setAudioChannels(2);
    // 音频编/解码器
    recorder.setAudioCodec(avcodec.AV_CODEC_ID_AAC);
    /*************************************************************
     * 设置音频结束
     ************************************************************/

    System.out.println("准备开始推流...");
    try {
        recorder.start();
    } catch (org.bytedeco.javacv.FrameRecorder.Exception e) {
        try {
            System.out.println("录制器启动失败，正在重新启动...");
            if (recorder != null) {
                System.out.println("尝试关闭录制器");
                recorder.stop();
                System.out.println("尝试重新开启录制器");
                recorder.start();
            }

        } catch (org.bytedeco.javacv.FrameRecorder.Exception e1) {
            log.error(e.toString());
            throw e;
        }
    }

    GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();// 本地环境
    Rectangle screenSize = ge.getMaximumWindowBounds();// 获取当前屏幕最大窗口边界
    CanvasFrame frame = new CanvasFrame("图片转RTMP流");// javacv提供的图像展现窗口
    int width = 352;
    int height = 288;
    long startTime = 0;
    Frame capturedFrame = null;

    System.out.println("开始推流");
    frame.setBounds((int) (screenSize.getWidth() - width) / 2, (int) (screenSize.getHeight() - height) / 2, width,
            height);// 窗口居中
    frame.setCanvasSize(width, height);// 设置CanvasFrame窗口大小
    BufferedImage image1 = ImageIO.read(new FileInputStream("D:/code/CameraMonitor/doc/a1.jpg"));
    BufferedImage image2 = ImageIO.read(new FileInputStream("D:/code/CameraMonitor/doc/a2.jpg"));
    BufferedImage image3 = ImageIO.read(new FileInputStream("D:/code/CameraMonitor/doc/a3.jpg"));
    BufferedImage image4 = ImageIO.read(new FileInputStream("D:/code/CameraMonitor/doc/a4.jpg"));
    int idx = 0;
    Java2DFrameConverter co = new Java2DFrameConverter();
    while (frame.isShowing()) {
        System.out.println("推流...");

        if (idx % 4 == 1) {
            capturedFrame = co.getFrame(image1);
        } else if (idx % 4 == 2) {
            capturedFrame = co.getFrame(image2);
        } else if (idx % 4 == 3) {
            capturedFrame = co.getFrame(image3);
        } else {
            capturedFrame = co.getFrame(image4);
        }
        idx++;
        if (idx > 1000) {
            idx = 0;
        }

        frame.showImage(capturedFrame);

        if (startTime == 0) {
            startTime = System.currentTimeMillis();
        }
        long videoTS = 1000 * (System.currentTimeMillis() - startTime);
        if (videoTS > recorder.getTimestamp()) {
            recorder.setTimestamp(videoTS);// 时间戳
        }
        if (capturedFrame != null) {
            recorder.record(capturedFrame);
        }

        Thread.sleep(100);
    }
    frame.dispose();
    recorder.stop();
    recorder.release();
}